A compact encoder / decoder pair that uses an binary zero-fluff encoding scheme. The size of the encoded object will be the same or smaller than the size that the object takes up in memory in a running Rust program.
In addition to exposing two simple funcitons that encode to Vec and decode from Vec, binary-encode exposes a Reader/Writer API that makes it work perfectly with other stream-based apis such as rust files, network streams, and the flate2-rs compression library.
#![feature(old_orphan_check)]
extern crate bincode;
extern crate "rustc-serialize" as rustc_serialize;
use bincode::SizeLimit;
#[derive(RustcEncodable, RustcDecodable, PartialEq)]
struct Entity {
x: f32,
y: f32,
}
#[derive(RustcEncodable, RustcDecodable, PartialEq)]
struct World {
entities: Vec<Entity>
}
fn main() {
let world = World {
entities: vec![Entity {x: 0.0, y: 4.0}, Entity {x: 10.0, y: 20.5}]
};
let encoded: Vec<u8> = bincode::encode(&world, SizeLimit::Infinite).unwrap();
// 8 bytes for the length of the vector, 4 bytes per float.
assert_eq!(encoded.len(), 8 + 4 * 4);
let decoded: World = bincode::decode(encoded, SizeLimit::Infinite).unwrap();
assert!(world == decoded);
}